FN 503

The FN 503 is a polymer frame striker-fired subcompact semi-automatic pistol manufactured in Columbia, South Carolina, by FN America, a division of FN Herstal.

FN 503
Type	Semi-automatic pistol
Place of origin	United States
Production history
Designed	c. 2019
Manufacturer	FN America
Unit cost	$549 (MSRP)
Produced	2020–2023
Specifications
Mass	21 oz (600 g)
Length	5.9 in (150 mm)
Barrel length	3.1 in (79 mm)
Width	1.1 in (28 mm)
Height	4.6 in (120 mm)
Cartridge	9×19mm Parabellum
Action	Striker-fired
Rate of fire	Semi-automatic
Feed system	Box magazine
Sights	Fixed 3-dot iron sights
References	[1]

History

Introduced in March 2020, the FN 503 is chambered in 9×19mm Parabellum and is intended for concealed carry.^[2]

As of August 2023, the FN 503 was discontinued.^[3]

Features

Main article: FN 509

The FN 503 is a striker-fired handgun with a stainless steel slide with the "design, performance and reliability standards" of the FN 509.^[4]

Subcompact in size, its overall length is 5.9 inches (150 mm) with a barrel length of 3.1 inches (79 mm) and a width of 1.1 inches (28 mm).

The three-dot iron sights are low-profile, while trigger pull averages 5 pounds-force (22 N).^[5]

Magazines are either 6-round with a pinky extension or 8-round with a grip sleeve.^[4]

See also

• FN FNS
• FN FNX
• FN FNP
• FN 509
• FN 502
• FN 510
• FN 545
• FN HiPer
• FN Five-seveN
• Browning Hi-Power